Cultivator.



No. 7|4,993. S Patanted Dec. 2, I902.

A. C. BAKER.

CULTIVATOR.

{Application filed m a; 1901.

(No llodeL') WITNESSES.

45. Z -MM- H or]: e ys.

111: moms versus no, rumour-15.. WASHINGTON a c iinrrr n STATES PATENT OFFICE.

ANDREV C. BAKER, OF ALBION, MICHIGAN.

CULTIVATOR.

:bPEC-IFICA'JPION forming part of Letters Patent N0. 714,993, dated December 2. 1902.

Application filed July 3. 1901. Serial No. 66,955- (No model.)

To (Ml whom, it may concern.-

Be it known that I, ANDREW C. BAKER, a citizen of the United States of America, residing at Albion, in the county of Calhoun and State of Michigan, have invented certain new and useful Improvements in Cultivators, of which the following is a specification, reference being had therein to the accompanying drawings.

This invention relates more specifically to that class of cultivators known as sulky cultivators; and it consists in providing a primary adjustment for adjusting the two independently-pivoted shovel-frames thereof to determine the maximum depth to which said shovels may go and in the construction, arrangement, and operation of a single lever for adjusting and holding said frames at different heights relative to each other, which constitutes a secondary adjustment and furnishes a means for raising either or both of said frames temporarily without changing the primary adjustment, all as more fully hereinafter described, and shown in the accompanying drawings, in which Figure l is a perspective view of a cultivator to which my invention is applied, the shovels being omitted. Fig. 2 is a detail of the raising device in perspective looking at the same from the rear. Fig. 3 is a side elevation of the raising device. Fig. 4 is a perspective detail showing the stops U.

A represents the wheels, B the arched axle, G the draft-pole secured thereto, D braces running from axle to draft-pole, E thecultivator-frame secured to the axle, F the drivers seat, G the front arch draft-yoke secured to the draft-pole, H the head-blocks secured to the end of the draft-yoke, I the shovel-frames pivotally secured to the head-blocks, free to rise and fall, J braces connecting the headblocks with the draft-pole, and V a latch-bar fastened to the lever and adapted to engage with catch on frame to hold shovel-frames I up from ground when not in use, all these parts being of known construction and operation and forming no part of my present invention.

A secondary adjustment for adjusting the independently-pivoted shovel-frames I relative to each other is provided and consists of a rock-shaft L, j ournaled in bearings M, which are secured to the arched axle. This rockshaft carries at its opposite ends two rockarms N N, respectively, the former of which is secured upon the rock-shaft by a set-screw, while the latter turns loosely upon the shaft. The loose rock-arm N is provided with a seg mental rack O, and a corresponding segmental rack O is secu red upon the rock-shaft adjacent to the rack 0. Between these two racks O O is fulcrumed, free to turn upon the rockshaft, the lever P, which carries two lockinglatches R B, one for each rack and adapted to be operated by means of handle-grips S S, pivotally secured on opposite sides of the handle-grip of the lever and extending, respectively, in front and rear thereof.

A primary adjustment is provided for determining the maximum depth to which the shovels may go by forking the rock-arms N and N at their free ends and adjustably securing within the forks by means of removable pins the bars T, to the lower ends of which the shovel-fra mes are secured by means of chains U in the usual manner, suitable stops U being provided for the rock-arms to limit their downward movement.

In practice the parts being constructed and arranged as shown and described it will readily be seen that the operator in taking hold of the lever can with equal facility release either latch or operate the lever without releasing either and can thus at will raise either one of the shovel-frames alone any desired distance be may wish and retain it there by reengaging the latch he has released, or he may raise both shovel-frames together temporarily any desired height, or they may be retained at their extreme height by the latch 1;, thus accomplishing with one lever what it requires two at present to do.

The adjustment of the bars T of my device constitutes the primary adjustment, as there is no provision made for holding the rockarms N and N adjusted in any position between their extremes of adjustment or between the stops U and their raised position when they are held by the latch V, any intermediate adjustment beingonly re1ative,as one of said rock-arms remains in contactwith its stop. Therefore as no segmental rack and operating-lever with its latch or any other means are provided for the purpose of raising or lowering the rock-arms to give a primary adjustment either shovel-frame may be adjusted relative to the other and so held by the racks O and O and their latches, or they may both or either one be raised by the lever temporarily during the operation of the machine without disturbing this predetermined depth adjustment.

What I claim as my invention is 1. In a sulky-cultivator, the combination with the carrying-frame and the independently-hinged shovel-frames, of a primary ad justment for adjusting said frames to determine the maximum depth to which the shovels may work, and a secondary adjustment for said frames consisting of a rock-shaft transversely journaled upon the carrying-frame, two rock-arms, one loose and one fast on said shaft, and connected with the shovel-frames by the said means for primary adjustment, a hand lever fulcrumed upon said shaft in reach of the drivers seat, two locking-latches upon opposite sides of the lever, and two segmental racks upon opposite sides of the lever and with which said latchesare adapted to engage respectively, one of said racks fast upon the rock-shaft and the other sleeved thereon and carrying, the loose rock-arm with it.

2. In a sulky-cultivator, the combination with the carrying-frame and the independently-hinged shovel-frames, of aprimary adjustment for adjusting said frames to determine the maximum depth to which the shovels may work, and a secondary adjustment for adjusting said frames relative to each other and for raising the same temporarily without changing the primary adjustment, said secondary adjustment consisting of the rock-shaft L transverselyjournaled upon the carrying-frame, the rock-arm N fast upon one end of said shaft, the rock-arm N upon the opposite end of said shaft, a hand-lever fulcrumed upon the rock-shaft free to turn independently thereof and having two locking-latches upon the opposite sides thereof, and two segmental racks O O on the rockshaft on opposite sides of the lever and c0- operating with the locking-latches, one rack being fast upon the rock-shaft and the other loose thereon and united with the loose rockarm; and said primary adjustment consisting of the vertically-adjustable bars '1 secured in the ends of the rock-arms and from which the shovel-frames are hung", and stops U to limit the downward movement of said rockarms.

In testimony whereof I affix my signature in presence of two witnesses.

v ANDREW O. BAKER.

Witnesses:

M. D. WEEKS, O. L. DAVIS. 

